old_mfn           567 arch/x86/xen/p2m.c 			unsigned long old_mfn;
old_mfn           577 arch/x86/xen/p2m.c 			old_mfn = cmpxchg(top_mfn_p, missing_mfn, mid_mfn_mfn);
old_mfn           578 arch/x86/xen/p2m.c 			if (old_mfn != missing_mfn) {
old_mfn           580 arch/x86/xen/p2m.c 				mid_mfn = mfn_to_virt(old_mfn);